Drier



Dec. 19, 1922. 1,439,173

1 J. KRAMER ET AL.

DRl ER Ff LED Aus. 6. 1919*. 2 SHEETS-SHEET 1 Dec. 19, 1922.

l J. KRAMER ET AL .y

DRIER.

F l LED AUG. 6. 191 9 2 SHEETS-SHEET 2 Patented Der. 19, 1922.

team

rAIeNI ortica.

JULIUs KRAMER AND Baarn. woLr, or CHICAGO, ILLINOIS, AssIeNOas 'ro IULLMAN COUCH COMPANY, or CHIOAGO, ILLINOIS, A CORPORATION or ILLINOIS( Daran.

T @ZZ whom it may concern.;

Be it known that we, JULrUs Thi-inni; and BERT D. VOLF, citizens of the United States, residing at Chicago, in the county of v@ook and State of Illinois, have invented certain new and useful Tniprovements in a Drier, of which the following is afspeciiication.

This invention relates more particularly to a drier for varnished woodwork suchas furniture or the like, but of course may have a more general use wherever applicable. The principal object of the invention is to provide a new and improved device of this kind by means of which articles can be dried more quickly than if subjected only to the atmosphere. n t

Further objects of the invention are to provide a drier of this lrind'in which a circulation of air is produced within the drier without subjecting the contents thereof to a direct draft; to provide adjacent upright passages in -which a natural draft is produced by heating elements in at least one of them; to receive the incoming air directly from the atmosphereso that no artificial moistening therefor is necessary; to eliminate fans,

blowers and suction connections; to provide` i means for directing the air currents downwardly from the top and to thus evenly distribute them throughout the drier; and in short to provide a drier of the construction described and claimed. t n

Referring now more particular to the drawings, Fig. 1 is a cross section of a drier constructed in accordance with the principles of this invention; Fig. 2 is a viewof one of the side walls, partly in section and partly in elevation; and Fig. 8 is a section through one of theflues in Fig. 2.v

In the Ordinary drying of varnished `furniture or the like it takes from three or four days to week or morendepending upon the paint or varnish used, in order that the coatingmay be dried or hardened sufficiently to handle the articles successfully.` Tf such ari ticles are placed in a drier which receives heated air from a fan orfblower the articles are dried unevenly, that is, more ontone side than on the other, or more in one part of the drier than in another and in either case the result is unsatisfactory. If the articles are placed; in a substantially sealed enclosure which'is artificially heated, the lackk of circulation prevents the rapid drying. .'The

.present inverti@ is therefere desienedend,

intended to overcome all of these projections by providing a drier in which there is a `natural or a definite air circulation from the topof the drier downwardly so that none of the articles will receive the direct impact of fans or blowers, and with a discharge connection whichreceives the relatively cooler air from the bottom of the drier and directs it upwardly and outwardly therefronrproducing a gentle, but `still a positive and well distributed circulation throughout the entire drier. n t

This drier comprises anenclosed chamber preferably in the form of a rooni with a fioor 1, side and end walls 2 and 3, and a ceiling 4 having rounded corners 5 where the ceil-l ing joins the side walls and having dependingk angularly disposed deiiectors 6 parallel with the side walls and spaced some distance therefrom. In the case of a narrow room or a small drier these deflectors 6 may be joined at the center as shown in Fig. 1, whichvis the preferredconstruction. This room or drier may be made of any desired or suitable material and for a furniture drier only a wall board or plaster covering is required.`

Within the drier and spaced slightly from each of the side walls thereof is a partition 7, behind which is a heating coil 8, connected by means of pipes 9 with an outside source of supply. At the bottom of the chamber or passagev formed by each partition 7 is an inlet pipe 10 which extends from the exterior of the drier and has a T-head with branches extending laterally in both directions below the heating coil 8i These branches 11 of thehead are prefably graduated in size, as shown in Fig. 2, and at the upper edge are spaced inlets 12 through which air from the outside of the drier be admitted all along the full length of the drier below the heating coil. Of course this same result can be obtained in different ways, but the object of the construction is to insure a uniform distribution vof the air along Athe entire side of the drier.

l Outside of each drier wall 2 is a wall 13 forming a vertical passage or. passages 14 closely adjacent the wall 2 so that the heating coil 8 will usually cause an increase of temperature in the passages 121. y

At the bottoms ofthe passages 1.4: they are connected with t ey interior of the drier and through the pass'ilge'` formed by the inside Partition meer/S. et immettere@ ilets l5" disposed A'below extensions ll of the inlet pipelO as shown more clearly in Figs. 2 and 3. These inlets l5 have no communication withthe passage formed behind lthe partition so that airisdrawn directly from the `bottom ofthe drier `into the upright passages lll. These passages le may be`re stricted in width if desired, as by means of vertical partitions 16. An outlet or suction pipe 17A may be provided for the upperends ofthe chamber 14T, and it is conteniplated vthat both these pipes andtheiulet pipesV l() may be connected to a suitable suction orblower system if desired, but ordinarily `such vconnections are not v,required as the "be directed downwardly by the deflectors 6. The partitions 7 thereforeA not only `protect thecontents of the drier from. the

direct heating of the coils 8 but they also form the upwardly directing passage for the incoming air current. Ofcourse the heating coils cause an inflow of air through the openings l2 ofthe inlet pipe l0, and as y the cooler air in the drier sinksto the bot-- tom it is drawnout of the `drier by the discharging .passages 14 which communicate with thedrier at the bottom, and which may be slightlyV heated to assistv in inducingy an upward air current by means of the adjacent heating coil 8, which however, is not necessary because even though thel air at the bottom of the drier iscooler that `that admitted in the top it is much warmer than the' outside air so that a draft is produced byA the discharging j )assages 14 which 4co1nmunicate. with the atmosphere at their tops.

By introdu'cingjthe `articles to be'dried at one end of the'drier and removing them at the other it canb'e kept continuously. in operation, and as there are no fans, blowers, or any parts `to get out of working order, no manual attention is required.4 The pipe y vl() preferably extends Ato the atmosphere outside of the factory or building in which thedrier is located, and'this insures a constantly changingy new air supply 'in the drier at all times.v d y y. l We claim: j

,1. In a drier having oppositesidewalls, a heating coil arranged `the full length of A: each -side wall, apartition adjacent: the side "wall enclosing the coil and extending adja- `cent the top of the cha er, means compris- Y ingv a rTheaded pipev with vspaced openings therein forv admitting atmospheric air at Ythe wall enclosing the coil, means for ad mitting air from the outside'of the drierto the yspace behind the partition, said means including a central pipe with laterally diminishing extensions thereof below the coil having openings therein at spaced distances to insure the admittance of atmospheric air at all pointsalong the said wall.

v3. In a drier, a closed chamber, means including a heating coil and a pipe with inlet openings extending along the side ofthe chamber communicating with the atmos phere for causing' an upward draft along the sides thereof, means extending' from the ceiling for defleotingthe upward draft from each side. downwardly within the drier, and passages parallel with the side walls and communicating with the bottom of thechamber to permit the escape of cooler air from the bottom of the drier and 'to cause a circulation therein.' y j 4. In a drier, theA combination with a chamber formed at the top of oppositesides with a 4curved deflector and longitudinally between the sides .with a deilector extending downwardly from the ceiling, of draft inducing means at the sides of the chamber, a partition extending from the floor only part way to the ceiling and enclosing.l said means 'fon directing'. the draft upwardly at the sides, an inlet from the outside of .the'drier at the bottom yof the partition, and an outlet at the bottom` of the drier in which a draft is also induced by the said .draft inducing means.` l i- 7 5. Al .drier cornprising-A an enclosure with .opposite sides and a deflector extending from the ceiling parallel with the sides, in,

cluding a partition extending' fromthe bot- `tom and terminating at a distance from the to protect the contents of the ldrier directly" therefrom, and means including a pipe back of the partition with. openings for vadmitting air from the outside of the drier at' spaced distances apart belowthe coil.

7. In a drier, a. closed chamber, a partitio- Ir adjacent the side wall thereof, means includingv a vlongitudinally extending pipe with openings forming communication between thespace black of the partition at the bottom thereof and the outside of the drier, and

means behind the partition for causing a draft from the outside of the drier through the pipe and to the bottom ofthe space behind the partition and upwardly toward the top of the chamber.

8. In a drier, a wall having two air spaces, the outer air space communicating at the bottom with the inside of the drier, and the top of the inner air space communicating directly and means including a perforated pipe forming communication for the inner air space at the bottom from the outside of the drier with the upper part of the drier chamber.

9. In a drier, a triple wall with air passages therebetween, the outer air passage communicating with the interior of the drier at the bottoms of the Walls, the inner air passage communicating at its bottom with the atmosphere and at its top opening out into the upper part of the drier chamber, and heating means in one of the passages for causing an upward draft in them both.

. 10. In a drier, a triple wall forming parallel, vertical air passages, means forming an atmospheric inlet for the inside passages, a converging inlet for the. outer air pas sages which extend between the inner and middle walls at the bottom of the drier, and means in one of the sets of air passages for producing an upward draft in them both.

l1. In a. drier` a triple wall forming par allel, vertical air passages, means torming` an atmospheric inlet for the inside passages, a converging inletl for the outer air passages which extend between the inner and middle walls at the bottom of the drier, a heating coil in the inner air passages to cause a circulation of air in both passages, and means at the upper edges of the side walls and dependingfrom the ceiling for4 directing the draft from the inner passages downwardly from the ceiling and toward the outlets at the bottom for the outer air passages.

JULIUS KRAMER. BERT D. WOLF. 

